Overall, the manga of Black Butler often provides more detailed character development and storylines. The anime, on the other hand, might make certain adjustments for better visual presentation and pacing.
You could write a fanfic where the Black Butler characters react to different art forms. Suppose they visit an art museum in a modern setting. Sebastian, with his refined taste, would have in - depth critiques of the paintings and sculptures, while Ciel might be more drawn to the darker or more mysterious artworks. Or they could react to a live theater performance, with Ciel being amazed at the actors' skills and Sebastian observing the behind - the - scenes details like the stagecraft and the actors' emotions.
One popular 'Black Butler' fanfiction could be those that explore different relationships between the main characters. For example, some might focus on a deeper friendship between Ciel and Sebastian. Another type could be AU (Alternate Universe) fanfictions where the setting or the roles of the characters are changed. For instance, a modern - day AU where Ciel is a business tycoon and Sebastian is his assistant.
The two main characters are Ciel Phantomhive and Sebastian Michaelis. Ciel is the young earl who is seeking revenge. Sebastian is the demon butler who has made a contract with Ciel. He is extremely powerful and efficient in serving Ciel, but also has his own motives which are tied to the contract.
The main plot of 'Black Butler' follows Ciel Phantomhive, a young noble in Victorian England. After his parents' death, he makes a contract with a demon, Sebastian Michaelis. Ciel, as the Queen's Guard Dog, has to solve various mysteries and crimes in the underworld while Sebastian protects him and aids in his revenge plans against those who wronged him. It's a story full of dark secrets, supernatural elements, and complex characters.
The Black Butler anime's ending doesn't have an exact equivalent in the manga. It deviated from the manga's plot and provided its own conclusion for the animated adaptation.
In general, the Black Butler anime adheres pretty well to the manga. Some scenes might be re-arranged or expanded for better animation and pacing, but the core story remains intact.
In many ways, the Black Butler anime differs from the manga. The character development might be a bit different, and some plot points could be emphasized or downplayed. Also, the art style and animation can give a distinct feel.